4-Chloro-2-methyl-1H-indene → 4-(3',5'-Di-t-butylphenyl)-2-methylindene

HRID 842455Notes

Reaction equation

HRID 842455 reaction equation
Cl[C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[CH:4]=[C:5]([CH3:11])[CH2:6]2.[C:12]([C:16]1[CH:17]=[C:18]([Mg]Br)[CH:19]=[C:20]([C:22]([CH3:25])([CH3:24])[CH3:23])[CH:21]=1)([CH3:15])([CH3:14])[CH3:13]>CCOCC.Cl[Ni](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[C:12]([C:16]1[CH:17]=[C:18]([C:2]2[CH:10]=[CH:9][CH:8]=[C:7]3[C:3]=2[CH:4]=[C:5]([CH3:11])[CH2:6]3)[CH:19]=[C:20]([C:22]([CH3:25])([CH3:24])[CH3:23])[CH:21]=1)([CH3:15])([CH3:14])[CH3:13]

Participants

5

Reactant 2

HCID 120107424-Chloro-2-methyl-1H-indeneHCID 178441125HCID 178441125, compound

Product 1

HCID 120107434-(3',5'-Di-t-butylphenyl)-2-methylindene

Reagents, catalysts & solvents 2

HCID 178418751HCID 178418751, compoundCatalystHCID 3283Diethyl EtherSolvent2×

Procedure

4-Chloro-2-methylindene (6.1 g, 37 mmol) and NiCl2(PPh3)2 (1.8 g, 2.8 mmol) were dissolved in 150 mL of Et2O. 3,5-Di-t-butylphenylmagnesium bromide (10 g, 37 mmol) as a Et2O solution was added to the solution and the reaction was stirred overnight at room temperature. After overnight stirring, the reaction was slowly quenched with H2O to neutralize unreacted Grignard. The solution was subsequently treated with 100 mL of 10% HCl(aq), neutralized with saturated sodium bicarbonate aqueous solution. The organic layer was dried with magnesium sulfate and the solvent was removed by rotary evaporation. The remaining residue was loaded onto a silica gel column and eluted with hexane. Yield was 4.6 g (40%).

Workup

  1. stirringAfter overnight stirring
  2. customthe reaction was slowly quenched with H2O
  3. additionThe solution was subsequently treated with 100 mL of 10% HCl(aq)
  4. dry with materialThe organic layer was dried with magnesium sulfate
  5. customthe solvent was removed by rotary evaporation
  6. washeluted with hexane

Sources & evidence

ORD record
ord-17559658361f4829b51259a145a097a0
Source dataset
uspto-grants-2002_04
Patent number
US06376413B1

Reaction notes

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